Griffin, Gene; Ming, Dennis; Herlsgaard, Thor; Helgeson, Del; Cobia, David W.; Koo, Won W.; Zink, Dan; Wilson, William W.; Griffin, Gene; Ming, Dennis; Herlsgaard, Thor; Helgeson, Del; Cobia, David W.; Koo, Won W.; Zink, Dan; Wilson, William W. (North Dakota State University, 1984)